var fruits = [
    {
        fruitName: '苹果',
        fruitQuantity: 30,
        fruitPrice: 3.8
    },
    {
        fruitName: '西瓜',
        fruitQuantity: 240,
        fruitPrice: 1.8
    },
    {
        fruitName: '芒果',
        fruitQuantity: 60,
        fruitPrice: 7.8
    }
]    